package murlen.util.fscriptME;import java.util.Vector;/*** <b>LineLoader - used by FScript to load source text</b>  <p>  <I>Copyright (C) 2002 murlen.</I></p>    <p>    This program is free software; you can redistribute it and/or    modify it under the terms of the GNU General Public    License as published by the Free Software Foundation; either    version 2 of the License, or (at your option) any later version.</p>    <p>    This software is distributed in the hope that it will be useful,    but WITHOUT ANY WARRANTY; without even the implied warranty of    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU    General Public License for more details.</p>    <p>    You should have received a copy of the GNU General Public License    along with this program; if not, write to the Free Software    Foundation, Inc.,59 Temple Place, Suite 330, Boston MA 0211-1307 USA    </p>* @author murlen* @version 0.5 * * * 20.08.2001 *   - getLine added *   - setCurLine test was wrong, allowed setting line one too far*/final class LineLoader {    public Vector lines;    private int curLine;    /**           *Constructor */    public LineLoader() {        lines=new Vector(20);        curLine=0;    }    /**      * resets the LineLoader  */    public final void reset() {        lines=null;        lines=new Vector(20);        curLine=0;    }    /**    * method to incrementally add lines to buffer    * @param s the line to load */    public final void addLine(String s) {        if (!s.trim().equals("")) {            lines.addElement(s);        } else {            //need to add blank lines to keep error msg lines            //in sync with file lines.            lines.addElement("");        }    }        /**     *add \n separated lines     *@param s the lines to add     */    public final void addLines(String s){        int pos;                if (!s.trim().equals("")){            pos=s.indexOf('\n');            while (pos>=0){                addLine(s.substring(0,pos));                s=s.substring(pos+1,s.length());                pos=s.indexOf('\n');            }            if (!s.trim().equals("")){                addLine(s);            }        }    }        /**    * Sets the current execution line    * @param n the line number */    public final void setCurLine(int n) {        if (n>lines.size()) {            n=lines.size()-1;        } else if (n<0) {            n=0;        }        curLine=n;    }    /**    * Returns the current execution line */    public final int getCurLine() {        return curLine;    }    /**    * Returns the total number of lines in buffer */    public final int lineCount() {        return lines.size();    }    /**    * Returns the text of the current line */    public final String getLine() {        return (String) lines.elementAt(curLine);    }        /**     *Returns the text of the requested line*/    public final String getLine(int n){        if(n<0||n>=lines.size()) return "";        return (String)lines.elementAt(n);    }        }